† Jackson's important books about American religious folk song are these: White Spirituals in the Southern Uplands, Chapel Hill, University of North Caroline Press, 1933; Spiritual Folk Songs of Early America, New York, J. J. Augustin, 1937; Down-East Spirituals and Others, New York, J. J. Augustin, 1939; White and Negro Spirituals, Their Life Span and Kinship, New York, J. J. Augustin, 1943; Another Sheaf of White Spirituals, Gainesville, University of Florida Press, 1952. Jackson's entire voluminous scholarly output is listed with an eloquent appreciation in Southern Folklore Quarterly XVII, No. 1 (March, 1953), 89-92.